This is our first tumble dryer, previously we used a dehumidifier... But we're using less power now and the clothes come out soft and shirts hardly need ironing... Win!
Runs at about 500w-700w during most cycles, so a total of 1.5-2kw per load as usually 2hours 30mins to complete.
I would say, the 9kg max is only supposed to be for cotton (and sheets has a seperate mode) we'll never have 9kg of cotton alone to wash. A mixed load is supposed to be 4.5kg... I doubt it matters that much but will just limit the efficency.
The app is fairly pointless, being able to remotely start isn't that helpful when they insist you don't leave it alone. Notifications that it's complete or some items are dry are useful.
It's very quiet when in use.
Clearing the lint each time is a bit annoying but not hard to do. Believe this is the same for every dryer you don't want to burst into flames, of which this hasn't done. Hurrah.